InChI=1S/C21H20O11/c22-10-7-11(23)14(15(25)12(24)6-9-4-2-1-3-5-9)13(8-10)31-21-18(28)16(26)17(27)19(32-21)20(29)30/h1-5,7-8,16-19,21-23,26-28H,6H2,(H,29,30)